// Drummer
// by Andrea Bianchi
// andreabianchi.alsoplantsfly.com

/*
 Copyright (C) 2009, Andrea Bianchi
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

#include "stylusEventManager.h"
#include "global.h"
using namespace DS;

StyulusEventManager* StyulusEventManager::getInstance()
{	
	static StyulusEventManager histnace;
	return &histnace;
}

void StyulusEventManager::registerOnStyulsPressed (Event callback)
{
	if (callback) press_= callback;
}

void StyulusEventManager::registerOnStyulsReleased (Event callback)
{
	if (callback) released_= callback;
}

void StyulusEventManager::registerOnStyulsDragged (Event callback)
{
	if (callback) dragged_= callback;
}

void StyulusEventManager::handleEvents()
{
	if (Stylus.Held){
		if (pressed_){
			// drag because was already pressed
			if (dragged_) (*dragged_)();
		}else{
			pressed_= true;
			if (press_) (*press_)();
		}
	
	}else{
		if (pressed_){
			// it was pressed but not anymore
			pressed_= false;
			if (released_) (*released_)();
		}
	}
}